Roles of surfactant and fibres on fibre transport in a small flotation deinking column

Allix, J.; Zeno, Elisa; Nortier, Patrice; Beneventi, Davide

doi:10.1016/j.cej.2011.01.018

Cited by 5 publications

(1 citation statement)

References 39 publications

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“…Moreover, froth flotation is less expensive than other conventional methods, making this technique a promising prospect in particules separation realm. During the last decades, froth flotation has been widely employed in several areas such as, mineral processing [22,23], the treatment of industrial waste water [24], the recycling of plastics [25], the paper industry for deinking and recycling of waste paper [26,27], and bioengineering [28].…”

Section: Introductionmentioning

confidence: 99%

Study of a foam flotation process assisted by cationic surfactant for the separation of soil clay particles: processing parameters and scaling-up sensitivity

Said

Frances

Grandjean

et al. 2019

Chemical Engineering and Processing - Process Intensification

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In a radioactively contaminated soil, cesium 137 is known to be uptaken by fine particles, preferentially by micrometric phyllosilicate particles. Cesium is almost irreversibly adsorbed on the planar and frayed edge sites of the phyllosilicates. Particulate froth flotation technology assisted by cationic surfactant and operating in continuous mode is studied as a possible method to selectively separate fine phyllosilicate particles from soil. As a first approach, the strategy was to investigate the potentiality of this modular technology to separate fine phyllosilicates from non contaminated soils. Several soils, exhibiting various physicochemical properties were floated and compared. The objective was to disclose and understand the influence of soil textural and physicochemical properties on the separation of fine phyllosilicate particles. Comparison between soils flotabilities indicated that the separation yield and the selectivity on fine particles are strongly related to the initial soil properties. Systematic studies of the sizeparticle distribution of the separated particles showed that fine phyllosilicate particles (<50 µm) removal from soil is possible. Three main size classes are detected in the separated samples: the first one is centered on 3 µm and could be attributed to the phyllosilicates class; the second one is centered on 10 µm and could be a phyllosilicate aggregates class; the last one, on 30-50 µm (depending on soil properties and flotation conditions), could be composed of phyllosilicate aggregates and/or silica aggregates classes. Finally, the mineralogical composition of the separated particles from the various soils were identified by using X-Ray Diffraction analysis.

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